Air-supply device for explosive-engines.



R. EHLERS.

AIR SUPPLY DEViCE FOR EXPLOSIVE ENGINES. APPLICATION FILED AUGJS. I9I6.

.1 ,273,837. Patented July so, 1918.

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UNITED srnrnsnnrnur OFFICE.

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sE-ATTLE, WASHINGTON.

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I Specification of Letters Patent.

Patented Jui eo, 191s.

Application filed August 15, 1916. Serial Ito/114,976.

T0 all-whom it may concern:

" Be it known that I, RICHARD EHLERS, a

useful Improvements in Air-Supply Devices I for EXplosive-Engines,of which the following is a specification.

. This invention relatesto regulating valves V the casing chamber. This plug is open at the' bottom and has in its periphery aper- 'tures 17 adapted to register with the air inlet openings 12 when the plug is moved into i one rotary position and to close the openings, more or less, when turned into other gas supply pipe of .an internal combustion engine; and its object isthe perfecting of devices of this character.

The in'vention'is illustrated in the accompany drawings, in whicht Figure 1 is a View in vertical longitudinal section of a regulating valve applied to the representation of an engine manifold-connection. Fig. 2 is a horizontalsectional view takenthrough 2,2O1I' Fig. 1. Fig. 3 is a front elevational view of parts shown in Fig. 1. Fig. is a fragmentary sectional v [rotated to present the apertures 17 in full open and closed relations, respectively, with latter the chamber portion 8 is formed of a truncated conical shape.

Positioned within such tapering portion of the chamber is a disk valve 9 of a diameter equal to that of the chamber at or about the mid-height of the same.

10 represents a helical spring bearing upon the bottom 11 of the valve chamber and adapted to yieldingly support the valve 9 near the upper end of the chamber part 8. In the peripheral wall of the casing and communicating with the upper portion of the chamber is one or more air inlet openings 12, two being shown at diametrically opposite sides. I

An outlet opening 13 is provided for the chamber below the elevation whereat the valve will seat against the chamber wall when the valve is drawn down in opposition to the spring 10, as will be hereinafter e2;- plained. I

A nipple 14 formed with or screwed into a threaded hole which communicates with the opening 13 is utilized to connectthe device with an ordinary manifold, indicated by 15,

througlr-wliich a mixture of combustible gases is transferred to the cylinders of an internal (:OllllOUStlOll engine from a carbureter, or an equivalent.-

16 represents a cylindrical hollow plug or cock inserted within the upper portion 6 of positions. I

To effect rotaryadjustments of the plug, I employ 'a finger 18 extending radially from the plug through a. cireumferentially arranged slot 19 provided in the casing. The slot 19 is desirably located and is of such length that lthe plug handle or finger 18 will be stopped by the slot ends when the plug is the air inlet holes 12. The finger 18 is de- "ta'chably connected to the p'lug'and serves to prevent the accidental withdrawal of the plu drawn into its lowermost position whereat it is arrested, as shown in Fig. 4, by lodging on the tapering wall of the chamber part 8. This will eflect the stoppage of an air supply through the casing until the vacuum is reduced through the supply of a mixture of Ii i theoperation of the engine with which i When this the combustible gas and air from the carbureter.

The valve 9 is, however, seldom drawn down into such passage-closing position, as

the spring 10 will assert its increasing power it is bei g co tra ted, and resul In a decrease only of the air flow through the casing because, as the valve descends in the tapering chamber part, the annular space about the valve diminishes.

By thus providing means to decrease the air passage as the vacuum increases, and vice versa, it is apparent that "the device serves to automatically furnish air, supplementary to that afforded by the carbureter, in quantities most suitable to an economical consumption of fuel and the ef ficiency of the engine.

It is a well-known fact that when the engine running slow and developing little power, the vacuum is comparatively great and the engine should. be supplied with a richer explosive mixture than is requisite when the engine speed and work is increased.

My improved devices accommodate themselves to such demands by arranging the spring-pressed valve with respect to the conical wall so that the air passage will de crease or increase in reverse proportions to the vacuum strength, so to speak, occurring in the manifold.

The function of the cock 16 is to enable the operator to render the automatic devices temporarily inoperative or at least lessen its capacity to supply air as, for example, when starting the engine in cold weather it is desirable to prevent the engine cylinders becoming unduly chilled.

After the engine has been in operation for a short while, the cock should be gradually turned into its open position, whereupon the regulating valve would respond to the demand.

Genie! of this patent may be obtained for five cents each, by addressing the What I claim, is-

A device of the class described including a hollow easing having one end opened,the interior of said casing having an upper cylindrical chamber and a conical chamber which tapers downwardly and inwardly from a point adjacent the open end to the closed end thereof, said casing provided adjacent its open end with opposed inlet openings, a hollow plug rotatably mounted in the open end of said casing and provided with opposed openings adapted when rotated to be moved into and out of registration with the openings in the casing, means fastened to said plug and extending eXteriorly of the said casing whereby said plug may be rotated, a spring located in said easing and having one end bearing against the closed end thereof, a disk valve connected to the other end of said spring and adapted to normally remain unseated, the diameter of the disk being greater than the interior diameter of the lower part of the conical chamber and said casing having an outlet opening located between the closed end thereof, and the valve, whereby upon a vacuum or suction being created in said casing through the last named opening the valve will be drawn downwardly against the wall of the casing to close communication between the inlet and outlet openings.

Signed at Seattle, Washington, this 9th day of August, 1916.

RICHARD EHLERS.

Witnesses PIERRE BARNES, E. PETERSON.

Commissioner of Patents,

Washington, D. O. 

